In sexual education, the sexual perversions must receive especial attention. I must first of all refer again to two matters, of which some account has previously been given: the influencing of congenital inborn tendencies; and the undifferentiated sexual impulse. As regards the former, we have to take the following data into consideration. The fact that the indications lead us to believe that a particular sexual perversion is inborn, need not induce us to think there is no hope of counteracting this perversion by well-planned educational influences. I have already written at considerable length about the undifferentiated sexual impulse, and have shown that perverse manifestations during the period of the undifferentiated sexual impulse do not prove that a permanent perversion has developed. But everything possible should be done to guard against the further development of any such perverse mode of sexual sensibility, including sexual qualities in the wider sense of the term. We know, for example, that many homosexual men have a tendency to dress in girls' clothing, and many homosexual women to go about in men's clothing, and, in both cases, to adopt the inclinations and occupations of the opposite sex. During the period of the undifferentiated sexual impulse, we must not attach too much importance to the appearance of inclinations of this kind; but it would be equally erroneous to ignore them altogether. Boys who adopt a girlish behaviour, should not be encouraged in doing so by treating the matter as a joke. If a boy frequently dresses up as a girl, or a girl as a boy, and if we observe between two boys, or between two girls, an unduly intimate friendship at an age which corresponds to the period of the undifferentiated sexual impulse, it will be as well to modify the children's education accordingly. A girl with such inclinations should, for example, be thrown as much as possible into the society of lads of an appropriate age. In the case of those who are still quite young, there is no doubt that by the proper measures we can in part check the development of perverse manifestations, and in part completely repress them; notwithstanding the fact that interested agitators, whose principal aim is to secure the repeal of Section 175 of the German Imperial Criminal Code, maintain the contrary, and assert that homosexual tendencies appearing in the child necessarily indicate the future development of permanent homosexuality. Parents, tutors, schoolmasters, and physicians, must not allow themselves to be led astray by these agitators, who falsify the data of science. In the interest of truth, in the interest of the children endangered by these perversions, and in the interest of civilisation, these misstatements must be contradicted.